Add 28/80 and 90/45
1st number: 28/80, 2nd number: 2 0/45
28/80 + 90/45 is 47/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
28/80 = 28 × 9/80 × 9 = 252/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
90/45 = 90 × 16/45 × 16 = 1440/720 - Add the two like fractions:
252/720 + 1440/720 = 252 + 1440/720 = 1692/720 - 1692/720 simplified gives 47/20
- So, 28/80 + 90/45 = 47/20
In mixed form: 27/20
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